I've got an old scag walk behind. I need to replace the spindle bearings

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Did you take a pic from then top down ? Been a while but I think there is a BIG snap ring that holds the bearings in place. More pics would be great. If it is the snap rings, it's a real PITA with out the right tool.

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Masters Degree in Thinking Out Side Of The Box,Graduate of the MacGyver Institute of Ingenuity

The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic

I think there is a snap ring on the top and bottom. Take those off, then carefully hammer the top of the spindle down through the housing. You could press it out if you have a press. Thats how my old spindle were.

Here is an exploded view of the spindle. Removing the smaller snap ring from the shaft is just the start. If you try to press the shaft out without removing the other 2 snap rings, and the shaft hangs up on the bearing, you could fubar the housing. I learned this the hard way

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Masters Degree in Thinking Out Side Of The Box,Graduate of the MacGyver Institute of Ingenuity

The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic

If you look at the original photo, all the way to the left, you can see a disk on the bottom of the spindle just barely visible.

That disc is held in place with two roll pins that are driven into the face of the disk. It looked and felt like one piece but I put my impact chisel into what looked like a groove in this disc and the disc popped off.

Hidden underneath was a snap ring. Removed that and it all came apart easliy.

My spindles have tapered roller bearings, not sealed bearings like the two diagrams.